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Editorial Team
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Asked: 2026-05-15T11:09:36+00:00

CREATE TABLE jokecategory ( jokeid INT NOT NULL, categoryid INT NOT NULL, PRIMARY KEY

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CREATE TABLE jokecategory (
  jokeid INT NOT NULL,
  categoryid INT NOT NULL,
  PRIMARY KEY (jokeid, categoryid)
) DEFAULT CHARACTER SET utf8;

especially PRIMARY KEY (jokeid, categoryid)? or is there a better way to write this?

Thank you in advance;-)

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1 Answer

  1. Editorial Team

    Yes it is a perfectly good table and primary key (I might call this an “association” table, but I would not call it a “lookup” table).

    Some people (not I) would insist on having a surrogate key column jokecategoryid as the primary key; if you do that you still need a UNIQUE constraint on (jokeid, categoryid) to enforce the business rule.

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